fix: improve performance of XcodeGraphMapper

Author: fortmarek

Package.resolved

@@ -45,8 +45,15 @@ struct PBXProjectMapper: PBXProjectMapping {
 
         // Map PBXTargets to domain Targets
         let targetMapper = PBXTargetMapper()
-        let targets = try await pbxProject.targets.serialCompactMap {
-            try await targetMapper.map(pbxTarget: $0, xcodeProj: xcodeProj)
+        let targets = try await withThrowingTaskGroup(of: Void.self, returning: [Target].self) { taskGroup in
+            var targets: [Target] = []
+            for pbxTarget in pbxProject.targets {
+                taskGroup.addTask {
+                    targets.append(try await targetMapper.map(pbxTarget: pbxTarget, xcodeProj: xcodeProj))
+                }
+            }
+            try await taskGroup.waitForAll()
+            return targets
         }
         .sorted()